-30.42% is the change from 687 to 478
Calculation steps:
[( 478 - 687 ) ÷ 687] x 100 = -30.42%
Formula
Percentage change = [(478 - 687) / 687] x 100
Subtract the new number by the original number
478 - 687 = -209
-209 ÷ 687 = -0.3042212518195051
-0.3042212518195051 x 100 = -30.42%